when I first did the wheel hubs, I had to move my car to get another car out, and the axel nuts were not torqued (just hand threaded)...upon breaking i got this very noticable click click click almost a crunching sound...i thaught...better not drive this until the hubs are torqued. I torqued them and the noise went away...now one month later the same noise returned, but now the hubs are cranked to 120 ft/lb and i get a noticable whirling from the wheels. I personally think i toasted a cheap 'made in china' bearing...but I dont know
